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Parameter Units <br />Prime Farmland <br />Lift B-A <br />Prime Farmland <br />Sinale Lift Soils <br />Lift Aand- Sin - <br />LiftB <br />Calcium carbonate <br />>15% <br />>40% <br />_ <br />percentage 15% <br />( <br />°/ <br />) <br />Sekn uni (p ri)�.2 <br />pp <br />Particle size <br />All soil textures except: s, Is, sc, sic, c <br />Boron tonl tested <br />wherever Bench 1 <br />material is - <br />used as suitable Prime <br />not tested <br />55�m <br />not tested <br />Farmland Lift B) <br />Coarse fragments ( °k) ° - <br />>15% <br />>10% 3" diam. + <br />>35% one location- <br />�109b-3 -diam 0 <br />( >25% average) <br />>35 % average <br />Sam le Site Frequenc <br />1 er 2.5 acres <br />1 per 2.5 acres <br />1 per 5 acres <br />This table is slightly different than the suitability table enclosed in Section 2.04.9 for the pre - <br />mine soils investigation. <br />' The threshold levels are to be used as a guide in evaluating the suitability of a soil material for reclamation. An <br />evaluation should take into account the 'total system ". Interactive parameters may either nullify or verify the <br />significance of a potential problem. <br />' The actual maximum acceptable salt level will depend on the plant species proposed in the revegetation plan and <br />the potential for upward salt movement. As pointed out in the Seltzer report in Attachment 2.05.4(2)(d) -f-4, Dave <br />Dearstyne of the NRCS said that a level of 6.0 in the subsoil would not be detrimental to grasses or alfalfa. A study <br />done by Curtis Swift, PhD, of Colorado State University (Attachment 2.05.4(2)(d) -2), tilled Salt Tolerance of Various <br />(Revised October 1009) 205.4(2)(d) -20 <br />